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Date:         Wed, 23 Oct 2002 01:03:31 -0500
Reply-To:     Harry Ruble <bmw635csi@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Harry Ruble <bmw635csi@HOTMAIL.COM>
Subject:      newbie questions '84 digijet
Content-Type: text/plain; format=flowed

Thanks for the replys: I should have given a little more info... The engine runs when you spray gas into the air intake. Purrs like a kitten..till it uses up the gas, so that rules out ignition. The fuel pump runs for the 3 seconds, I have also jumpered it at the relay and can hear the fuel flowing in the lines back by the motor, but haven't as yet checked the pressure. I have a gauge but was waiting to get 'er running first. I'm as good as postive that the injectors aren't operating. I've ohmed the ecu connector (disconnected) 23&7,24&7,13&7,12&7. the readings are a little higher than 16-16.4 more like 18-19. the injectors ohm at 15.6 all the same. Grounds at 25 and 7 are good- 0 ohms. I also cleaned them at the head and by the relay box.

I've checked the relays following the procedure in the Bentley...all good. How do you go about checking the pulse from terminal 7 of the Hall control unit. And just what is it's function? I'm guessing more for the ignition side than fuel???

Can a bad temp sensor II cause the injectors to not function?

I thought about pulling an injector set to check for fuel spray, but figured that the o-rings would crack since they probably never have been out. There are o-rings in there right? Or do they come out easily?

I appreciate everyones help Harry Ruble

the injectors will only be energized here and there. that is probably not the best way to start. whtis the problem? is it turning over? is there fuel pressure? Is tthe fuel pump kicking in? there is a fuel pump relay that will cause issues. You should be able to hear the fuel pump when you turn the ignition on. it should go on for like 3-5 seconds and then shut off. it is under the bus sort of under the passanger''s butt.

also, check the ICU (the think bolted to the heat sink on the left hand firewall. if that is dead then you won't get anywhere. got a spark?> if no spark then it's a bad coil or icu. the ecu on th eother hand rarely fails actually.

matthew

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